It's not quite that easy,

1. using 7-zip extract the driver file you downloaded to your desktop.
2. Telnet into the receiver and issue the init 4 command to place enigma to sleep.
3. FTP into the receiver and navigate to lib/modules/2.6.18-**/extra. (The red bit corresponds to the kernel version of your image).
4. copy the drivers already on your receiver to a safe place, just in case.
5. Delete the old drivers and Copy the new drivers to the receiver.
6. reboot your receiver.

If the image does boot back up or you experience any strange issues directly after transferring the drivers over either reflash or put the older drivers back using the same procedure as above.